The Brewers suspect the Dodgers are attempting to steal their signs in the National League Championship Series. And, according to the Athletic, who cited unidentified league sources, Milwaukee is suspicious Los Angeles is using video cameras to do it.

“They use video people to get sequences,” an unidentified source told the Athletic. “It’s known throughout the league. MLB knows it’s an issue.”

Milwaukee catcher Erik Kratz pointed to a specific instance in the sixth inning of Game 5 when he saw Manny Machado motioning toward Chris Taylor, who was at the plate in what he thought was an attempt to inform him of the upcoming pitch. That was just an allegation of stealing signs in general, but the suspicion goes deeper.

The Brewers reportedly suspect the Dodgers of sending an employee around the stadium to relay stolen signals.

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"There is concern amongst some Brewers that the Dodgers are using video to pick up their signs, multiple sources tell The Athletic," the report says. "One person inside the organization said that on videos of the games, a coach could be seen running from the hallway into the Dodgers’ dugout whenever a runner reached second base, possibly a sign that L.A. was relaying a pitchers’ sequences to the runner during those at-bats."

Other sources from around the league have pointed out the Brewers are clearly trying all they can to keep the Dodgers from stealing signals, as Milwaukee is using multiple signs even with no runners on base.

“That’s a dead giveaway they think something is up,” one rival executive told the Athletic.

Sign stealing is part of baseball. It is at every level. But, with the suspicion placed upon the Astros in the American League Championship Series where the Red Sox and Indians alleged Houston was using video to do it, it has become a hot-button topic.

“Unless you’re doing bush league stuff where you’re trying to hurt players, not that I’m naming names, that’s where guys draw the line,” Kratz told the Athletic. “But I think it’s a very hot topic now with the whole Houston Astros employee now in the camera well. I would hope they aren’t doing shady stuff where there are (employees) in the stands or all that stuff.”

Game 6 is scheduled for 8:39 p.m. ET Friday at Miller Park in Milwaukee.